Kang, Young Joo Kim, Dae Sung Lee, Sang Hyun Park, Jeunghee Chang, Joonyeon Moon, Je Yong Lee, Gangho Yoon, Jungbum Jo, Younghtm Jung, Myung-Hwa 2024-01-21T00:30:36Z 2024-01-21T00:30:36Z 2021-09-02 2007-10-18 1932-7447 https://pubs.kist.re.kr/handle/201004/134037 Single-crystal line Zn1-xMnxO (x = 0.05, 0.1, and 0.2) nanowires were synthesized using the thermal vapor transport method. Their X-ray diffraction patterns reveal the monotonous expansion of the lattice constants with increasing Mn content, due to the effective Mn doping. The electronic structures of the Zn and Mn atoms were probed by X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), and X-ray magnetic circular dichroism (XMCD), in order to investigate the origin of their ferromagnetism. As the Mn content increases to x = 0.1, the XPS peaks of Zn and Mn 2p shift to a higher energy, suggesting the possibility of hybridization between the Mn 21 ions and host defects. The XAS and XMCD spectra confirm that the Mn 21 ions substitute into the tetrahedrally coordinated Zn sites in ZnO. The magnetization curves indicate the existence of room-temperature ferromagnetic behavior. The magnetoresistance of a single Zn0.9Mn0.1O nanowire reaches a positive value of 10% at 2 K under a magnetic field of 9 T. English AMER CHEMICAL SOC DILUTED MAGNETIC SEMICONDUCTOR DOPED ZNO NANOPARTICLES 2P ABSORPTION-SPECTRA CIRCULAR-DICHROISM ROOM-TEMPERATURE THIN-FILMS TRANSITION EXCHANGE FABRICATION Ferromagnetic Zn1-xMnxO (x=0.05, 0.1, and 0.2) nanowires Article 10.1021/jp074289j 1 JOURNAL OF PHYSICAL CHEMISTRY C, v.111, no.41, pp.14956 - 14961 JOURNAL OF PHYSICAL CHEMISTRY C 111 41 14956 14961 scie scopus 000250142300006 2-s2.0-35948998813 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article DILUTED MAGNETIC SEMICONDUCTOR DOPED ZNO NANOPARTICLES 2P ABSORPTION-SPECTRA CIRCULAR-DICHROISM ROOM-TEMPERATURE THIN-FILMS TRANSITION EXCHANGE FABRICATION ZnMnO ferromagnetism nanowire